I guess the OP should have said that the "perception" of speed is the killer feature. I find Android is now terrible on both my Samsung Tab 2 and my Galaxy S8.

I guess the OP should have said that the "perception" of speed is the killer feature. I find Android is now terrible on both my Samsung Tab 2 and my Galaxy S8. Sometimes I click something and it takes over a second to do any UI changes and looks like it hasn't responded. Just as you go to click it again, it comes up. I find the same in multiple apps where basic actions take too long even simple menu/view apps like email. I don't know what has happened but it does seem crazy that in 20 years with hardware that is 1000s of times more powerful, we still can't consistently solve click latency. Maybe it's just me.